Which of these sitcoms was famous in the 50s?

I Love Lucy is an American television sitcom that originally aired on CBS from October 15, 1951, to May 6, 1957, with a total of 180 half-hour episodes, spanning six seasons. The show starred Lucille Ball, and her husband, Desi Arnaz. The series followed the life of Lucy Ricardo (Ball), a young, middle-class housewife living in New York City, who often concocted plans with her best friends and landlords, Ethel and Fred Mertz (Vance and Frawley), to appear alongside her bandleader husband, Ricky Ricardo (Arnaz), in his nightclub.

Source: Wikipedia